Method for testing dynamic angle of power train of power assembly

The invention provides a power assembly transmission system dynamic angle test method comprising the following steps: arranging a laser sensor and a reflector, the laser sensor being used for measuring Z-direction displacement data of a first tested part and a second tested part; establishing a vehicle test condition, and enabling the test vehicle to be in a target test state; adjusting the light spot diameter, the detection range and the sampling frequency of the laser sensor, and measuring and recording the Z-direction displacement data in real time; and calculating the dynamic angle of the driveline of the driveline power assembly according to a dynamic angle calculation formula. By the adoption of the device, non-contact angle measurement can be achieved, the purpose of dynamically collecting instantaneous angle change information of the dynamic driving working condition of the vehicle in real time is achieved, only a reflector and a corresponding laser displacement tester need to be simply set up on a te